1252401665226 has 16 divisors (see below), whose sum is σ = 2510781386400. Its totient is φ = 416470879088.

The previous prime is 1252401665197. The next prime is 1252401665233. The reversal of 1252401665226 is 6225661042521.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249082941 + ... + 249087968.

It is an arithmetic number, because the mean of its divisors is an integer number (156923836650).

Almost surely, 2^{1252401665226} is an apocalyptic number.

1252401665226 is an abundant number, since it is smaller than the sum of its proper divisors (1258379721174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1252401665226 is a wasteful number, since it uses less digits than its factorization.

1252401665226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498171333.

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 1252401665226 in words is "one trillion, two hundred fifty-two billion, four hundred one million, six hundred sixty-five thousand, two hundred twenty-six".